One must consider that in Europe, there is no Ameraucana. And there are a few standards for Araucanas. The tailed kind must be bearded/muffed and also crested. The rumpless kind can be bearded/muffed OR tufted. And I'm sure it varies from country to country too.
I have very very little doubt that bird is a cross.
I have very very little doubt that bird is a cross.